CM Punk won the WWE Championship in Madison Square Garden at last year's Survivor Series pay-per-view and has successfully defended it since then. However, his championship reign is in jeopardy at SummerSlam. The "Voice of the Voiceless" must defend his world championship against John Cena and Big Show in a triple threat match.
It seems that the WWE is moving away from CM Punk vs. Daniel Bryan and into CM Punk vs. John Cena. Cena capturing the championship in their first PPV match since last year's SummerSlam would be the most logical move.
One aspect of Punk's gradual turn from tweener to heel focuses on the fact that he was overlooked as a babyface. After all, his title defenses rarely closed PPVs. It was Cena that, more often than not, closed out the PPV.
Thus, Punk definitely has a personal problem with Cena. If Cena walks out of SummerSlam with the WWE Championship, it will only add more to Punk's claims that Cena has been overshadowing him.
Furthermore, the triple threat stipulation allows for Cena to win Punk's WWE Championship without actually pinning him. By having Big Show take the pin, Punk would have a very plausible claim for a rematch.
Punk's title reign has been nothing short of spectacular. He's closing in on nine months as WWE Champion. My final reason for having Cena win the WWE Championship at SummerSlam is that it will put the title at the forefront of the feud.
While Punk's love triangle feud with Bryan and AJ was a highlight of the summer, it failed to focus on the WWE Championship. Instead, it appeared as if AJ was the focus of the feud. By having Cena win the title to really ignite things between him and Punk, the WWE Championship will once again be the focal point of the marquee feud of the WWE.